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linux/drivers/scsi/qla2xxx/qla_target.h
Roland Dreier c8292d1da5 qla2xxx: Update target lookup session tables when a target session changes 
It is possible for the target code to change the loop_id or s_id of a
target session in reaction to an FC fabric change.  However, the
session structures are stored in tables that are indexed by these two
keys, and if we just change the session structure but leave the
pointers to it in the old places in the table, havoc can ensue.  For
example, a new session might come along that should go in the old slot
in the table and overwrite the old session pointer.

To handle this, add a new tgt_ops->update_sess() method that also
updates the "by loop_id" and "by s_id" lookup tables when a session
changes, so that the keys where a session pointer is stored in these
tables always matches the keys in the session structure itself.

(nab: Drop unnecessary double inversion with FCF_CONF_COMP_SUPPORTED
      usage)

Signed-off-by: Roland Dreier <roland@purestorage.com>
Cc: Chad Dupuis <chad.dupuis@qlogic.com>
Cc: Arun Easi <arun.easi@qlogic.com>
Cc: Saurav Kashyap <saurav.kashyap@qlogic.com>
Cc: stable@vger.kernel.org
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2012-10-26 12:29:46 -07:00

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/*
* Copyright (C) 2004 - 2010 Vladislav Bolkhovitin <vst@vlnb.net>
* Copyright (C) 2004 - 2005 Leonid Stoljar
* Copyright (C) 2006 Nathaniel Clark <nate@misrule.us>
* Copyright (C) 2007 - 2010 ID7 Ltd.
*
* Forward port and refactoring to modern qla2xxx and target/configfs
*
* Copyright (C) 2010-2011 Nicholas A. Bellinger <nab@kernel.org>
*
* Additional file for the target driver support.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
/*
* This is the global def file that is useful for including from the
* target portion.
*/
#ifndef __QLA_TARGET_H
#define __QLA_TARGET_H
#include "qla_def.h"
/*
* Must be changed on any change in any initiator visible interfaces or
* data in the target add-on
*/
#define QLA2XXX_TARGET_MAGIC 269
/*
* Must be changed on any change in any target visible interfaces or
* data in the initiator
*/
#define QLA2XXX_INITIATOR_MAGIC 57222
#define QLA2XXX_INI_MODE_STR_EXCLUSIVE "exclusive"
#define QLA2XXX_INI_MODE_STR_DISABLED "disabled"
#define QLA2XXX_INI_MODE_STR_ENABLED "enabled"
#define QLA2XXX_INI_MODE_EXCLUSIVE 0
#define QLA2XXX_INI_MODE_DISABLED 1
#define QLA2XXX_INI_MODE_ENABLED 2
#define QLA2XXX_COMMAND_COUNT_INIT 250
#define QLA2XXX_IMMED_NOTIFY_COUNT_INIT 250
/*
* Used to mark which completion handles (for RIO Status's) are for CTIO's
* vs. regular (non-target) info. This is checked for in
* qla2x00_process_response_queue() to see if a handle coming back in a
* multi-complete should come to the tgt driver or be handled there by qla2xxx
*/
#define CTIO_COMPLETION_HANDLE_MARK BIT_29
#if (CTIO_COMPLETION_HANDLE_MARK <= MAX_OUTSTANDING_COMMANDS)
#error "CTIO_COMPLETION_HANDLE_MARK not larger than MAX_OUTSTANDING_COMMANDS"
#endif
#define HANDLE_IS_CTIO_COMP(h) (h & CTIO_COMPLETION_HANDLE_MARK)
/* Used to mark CTIO as intermediate */
#define CTIO_INTERMEDIATE_HANDLE_MARK BIT_30
#ifndef OF_SS_MODE_0
/*
* ISP target entries - Flags bit definitions.
*/
#define OF_SS_MODE_0 0
#define OF_SS_MODE_1 1
#define OF_SS_MODE_2 2
#define OF_SS_MODE_3 3
#define OF_EXPL_CONF BIT_5 /* Explicit Confirmation Requested */
#define OF_DATA_IN BIT_6 /* Data in to initiator */
/* (data from target to initiator) */
#define OF_DATA_OUT BIT_7 /* Data out from initiator */
/* (data from initiator to target) */
#define OF_NO_DATA (BIT_7 | BIT_6)
#define OF_INC_RC BIT_8 /* Increment command resource count */
#define OF_FAST_POST BIT_9 /* Enable mailbox fast posting. */
#define OF_CONF_REQ BIT_13 /* Confirmation Requested */
#define OF_TERM_EXCH BIT_14 /* Terminate exchange */
#define OF_SSTS BIT_15 /* Send SCSI status */
#endif
#ifndef QLA_TGT_DATASEGS_PER_CMD32
#define QLA_TGT_DATASEGS_PER_CMD32 3
#define QLA_TGT_DATASEGS_PER_CONT32 7
#define QLA_TGT_MAX_SG32(ql) \
(((ql) > 0) ? (QLA_TGT_DATASEGS_PER_CMD32 + \
QLA_TGT_DATASEGS_PER_CONT32*((ql) - 1)) : 0)
#define QLA_TGT_DATASEGS_PER_CMD64 2
#define QLA_TGT_DATASEGS_PER_CONT64 5
#define QLA_TGT_MAX_SG64(ql) \
(((ql) > 0) ? (QLA_TGT_DATASEGS_PER_CMD64 + \
QLA_TGT_DATASEGS_PER_CONT64*((ql) - 1)) : 0)
#endif
#ifndef QLA_TGT_DATASEGS_PER_CMD_24XX
#define QLA_TGT_DATASEGS_PER_CMD_24XX 1
#define QLA_TGT_DATASEGS_PER_CONT_24XX 5
#define QLA_TGT_MAX_SG_24XX(ql) \
(min(1270, ((ql) > 0) ? (QLA_TGT_DATASEGS_PER_CMD_24XX + \
QLA_TGT_DATASEGS_PER_CONT_24XX*((ql) - 1)) : 0))
#endif
#endif
#define GET_TARGET_ID(ha, iocb) ((HAS_EXTENDED_IDS(ha)) \
? le16_to_cpu((iocb)->u.isp2x.target.extended) \
: (uint16_t)(iocb)->u.isp2x.target.id.standard)
#ifndef IMMED_NOTIFY_TYPE
#define IMMED_NOTIFY_TYPE 0x0D /* Immediate notify entry. */
/*
* ISP queue - immediate notify entry structure definition.
* This is sent by the ISP to the Target driver.
* This IOCB would have report of events sent by the
* initiator, that needs to be handled by the target
* driver immediately.
*/
struct imm_ntfy_from_isp {
uint8_t entry_type; /* Entry type. */
uint8_t entry_count; /* Entry count. */
uint8_t sys_define; /* System defined. */
uint8_t entry_status; /* Entry Status. */
union {
struct {
uint32_t sys_define_2; /* System defined. */
target_id_t target;
uint16_t lun;
uint8_t target_id;
uint8_t reserved_1;
uint16_t status_modifier;
uint16_t status;
uint16_t task_flags;
uint16_t seq_id;
uint16_t srr_rx_id;
uint32_t srr_rel_offs;
uint16_t srr_ui;
#define SRR_IU_DATA_IN 0x1
#define SRR_IU_DATA_OUT 0x5
#define SRR_IU_STATUS 0x7
uint16_t srr_ox_id;
uint8_t reserved_2[28];
} isp2x;
struct {
uint32_t reserved;
uint16_t nport_handle;
uint16_t reserved_2;
uint16_t flags;
#define NOTIFY24XX_FLAGS_GLOBAL_TPRLO BIT_1
#define NOTIFY24XX_FLAGS_PUREX_IOCB BIT_0
uint16_t srr_rx_id;
uint16_t status;
uint8_t status_subcode;
uint8_t reserved_3;
uint32_t exchange_address;
uint32_t srr_rel_offs;
uint16_t srr_ui;
uint16_t srr_ox_id;
uint8_t reserved_4[19];
uint8_t vp_index;
uint32_t reserved_5;
uint8_t port_id[3];
uint8_t reserved_6;
} isp24;
} u;
uint16_t reserved_7;
uint16_t ox_id;
} __packed;
#endif
#ifndef NOTIFY_ACK_TYPE
#define NOTIFY_ACK_TYPE 0x0E /* Notify acknowledge entry. */
/*
* ISP queue - notify acknowledge entry structure definition.
* This is sent to the ISP from the target driver.
*/
struct nack_to_isp {
uint8_t entry_type; /* Entry type. */
uint8_t entry_count; /* Entry count. */
uint8_t sys_define; /* System defined. */
uint8_t entry_status; /* Entry Status. */
union {
struct {
uint32_t sys_define_2; /* System defined. */
target_id_t target;
uint8_t target_id;
uint8_t reserved_1;
uint16_t flags;
uint16_t resp_code;
uint16_t status;
uint16_t task_flags;
uint16_t seq_id;
uint16_t srr_rx_id;
uint32_t srr_rel_offs;
uint16_t srr_ui;
uint16_t srr_flags;
uint16_t srr_reject_code;
uint8_t srr_reject_vendor_uniq;
uint8_t srr_reject_code_expl;
uint8_t reserved_2[24];
} isp2x;
struct {
uint32_t handle;
uint16_t nport_handle;
uint16_t reserved_1;
uint16_t flags;
uint16_t srr_rx_id;
uint16_t status;
uint8_t status_subcode;
uint8_t reserved_3;
uint32_t exchange_address;
uint32_t srr_rel_offs;
uint16_t srr_ui;
uint16_t srr_flags;
uint8_t reserved_4[19];
uint8_t vp_index;
uint8_t srr_reject_vendor_uniq;
uint8_t srr_reject_code_expl;
uint8_t srr_reject_code;
uint8_t reserved_5[5];
} isp24;
} u;
uint8_t reserved[2];
uint16_t ox_id;
} __packed;
#define NOTIFY_ACK_SRR_FLAGS_ACCEPT 0
#define NOTIFY_ACK_SRR_FLAGS_REJECT 1
#define NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM 0x9
#define NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL 0
#define NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_UNABLE_TO_SUPPLY_DATA 0x2a
#define NOTIFY_ACK_SUCCESS 0x01
#endif
#ifndef ACCEPT_TGT_IO_TYPE
#define ACCEPT_TGT_IO_TYPE 0x16 /* Accept target I/O entry. */
#endif
#ifndef CONTINUE_TGT_IO_TYPE
#define CONTINUE_TGT_IO_TYPE 0x17
/*
* ISP queue - Continue Target I/O (CTIO) entry for status mode 0 structure.
* This structure is sent to the ISP 2xxx from target driver.
*/
struct ctio_to_2xxx {
uint8_t entry_type; /* Entry type. */
uint8_t entry_count; /* Entry count. */
uint8_t sys_define; /* System defined. */
uint8_t entry_status; /* Entry Status. */
uint32_t handle; /* System defined handle */
target_id_t target;
uint16_t rx_id;
uint16_t flags;
uint16_t status;
uint16_t timeout; /* 0 = 30 seconds, 0xFFFF = disable */
uint16_t dseg_count; /* Data segment count. */
uint32_t relative_offset;
uint32_t residual;
uint16_t reserved_1[3];
uint16_t scsi_status;
uint32_t transfer_length;
uint32_t dseg_0_address; /* Data segment 0 address. */
uint32_t dseg_0_length; /* Data segment 0 length. */
uint32_t dseg_1_address; /* Data segment 1 address. */
uint32_t dseg_1_length; /* Data segment 1 length. */
uint32_t dseg_2_address; /* Data segment 2 address. */
uint32_t dseg_2_length; /* Data segment 2 length. */
} __packed;
#define ATIO_PATH_INVALID 0x07
#define ATIO_CANT_PROV_CAP 0x16
#define ATIO_CDB_VALID 0x3D
#define ATIO_EXEC_READ BIT_1
#define ATIO_EXEC_WRITE BIT_0
#endif
#ifndef CTIO_A64_TYPE
#define CTIO_A64_TYPE 0x1F
#define CTIO_SUCCESS 0x01
#define CTIO_ABORTED 0x02
#define CTIO_INVALID_RX_ID 0x08
#define CTIO_TIMEOUT 0x0B
#define CTIO_LIP_RESET 0x0E
#define CTIO_TARGET_RESET 0x17
#define CTIO_PORT_UNAVAILABLE 0x28
#define CTIO_PORT_LOGGED_OUT 0x29
#define CTIO_PORT_CONF_CHANGED 0x2A
#define CTIO_SRR_RECEIVED 0x45
#endif
#ifndef CTIO_RET_TYPE
#define CTIO_RET_TYPE 0x17 /* CTIO return entry */
#define ATIO_TYPE7 0x06 /* Accept target I/O entry for 24xx */
struct fcp_hdr {
uint8_t r_ctl;
uint8_t d_id[3];
uint8_t cs_ctl;
uint8_t s_id[3];
uint8_t type;
uint8_t f_ctl[3];
uint8_t seq_id;
uint8_t df_ctl;
uint16_t seq_cnt;
uint16_t ox_id;
uint16_t rx_id;
uint32_t parameter;
} __packed;
struct fcp_hdr_le {
uint8_t d_id[3];
uint8_t r_ctl;
uint8_t s_id[3];
uint8_t cs_ctl;
uint8_t f_ctl[3];
uint8_t type;
uint16_t seq_cnt;
uint8_t df_ctl;
uint8_t seq_id;
uint16_t rx_id;
uint16_t ox_id;
uint32_t parameter;
} __packed;
#define F_CTL_EXCH_CONTEXT_RESP BIT_23
#define F_CTL_SEQ_CONTEXT_RESIP BIT_22
#define F_CTL_LAST_SEQ BIT_20
#define F_CTL_END_SEQ BIT_19
#define F_CTL_SEQ_INITIATIVE BIT_16
#define R_CTL_BASIC_LINK_SERV 0x80
#define R_CTL_B_ACC 0x4
#define R_CTL_B_RJT 0x5
struct atio7_fcp_cmnd {
uint64_t lun;
uint8_t cmnd_ref;
uint8_t task_attr:3;
uint8_t reserved:5;
uint8_t task_mgmt_flags;
#define FCP_CMND_TASK_MGMT_CLEAR_ACA 6
#define FCP_CMND_TASK_MGMT_TARGET_RESET 5
#define FCP_CMND_TASK_MGMT_LU_RESET 4
#define FCP_CMND_TASK_MGMT_CLEAR_TASK_SET 2
#define FCP_CMND_TASK_MGMT_ABORT_TASK_SET 1
uint8_t wrdata:1;
uint8_t rddata:1;
uint8_t add_cdb_len:6;
uint8_t cdb[16];
/*
* add_cdb is optional and can absent from struct atio7_fcp_cmnd. Size 4
* only to make sizeof(struct atio7_fcp_cmnd) be as expected by
* BUILD_BUG_ON in qlt_init().
*/
uint8_t add_cdb[4];
/* uint32_t data_length; */
} __packed;
/*
* ISP queue - Accept Target I/O (ATIO) type entry IOCB structure.
* This is sent from the ISP to the target driver.
*/
struct atio_from_isp {
union {
struct {
uint16_t entry_hdr;
uint8_t sys_define; /* System defined. */
uint8_t entry_status; /* Entry Status. */
uint32_t sys_define_2; /* System defined. */
target_id_t target;
uint16_t rx_id;
uint16_t flags;
uint16_t status;
uint8_t command_ref;
uint8_t task_codes;
uint8_t task_flags;
uint8_t execution_codes;
uint8_t cdb[MAX_CMDSZ];
uint32_t data_length;
uint16_t lun;
uint8_t initiator_port_name[WWN_SIZE]; /* on qla23xx */
uint16_t reserved_32[6];
uint16_t ox_id;
} isp2x;
struct {
uint16_t entry_hdr;
uint8_t fcp_cmnd_len_low;
uint8_t fcp_cmnd_len_high:4;
uint8_t attr:4;
uint32_t exchange_addr;
#define ATIO_EXCHANGE_ADDRESS_UNKNOWN 0xFFFFFFFF
struct fcp_hdr fcp_hdr;
struct atio7_fcp_cmnd fcp_cmnd;
} isp24;
struct {
uint8_t entry_type; /* Entry type. */
uint8_t entry_count; /* Entry count. */
uint8_t data[58];
uint32_t signature;
#define ATIO_PROCESSED 0xDEADDEAD /* Signature */
} raw;
} u;
} __packed;
#define CTIO_TYPE7 0x12 /* Continue target I/O entry (for 24xx) */
/*
* ISP queue - Continue Target I/O (ATIO) type 7 entry (for 24xx) structure.
* This structure is sent to the ISP 24xx from the target driver.
*/
struct ctio7_to_24xx {
uint8_t entry_type; /* Entry type. */
uint8_t entry_count; /* Entry count. */
uint8_t sys_define; /* System defined. */
uint8_t entry_status; /* Entry Status. */
uint32_t handle; /* System defined handle */
uint16_t nport_handle;
#define CTIO7_NHANDLE_UNRECOGNIZED 0xFFFF
uint16_t timeout;
uint16_t dseg_count; /* Data segment count. */
uint8_t vp_index;
uint8_t add_flags;
uint8_t initiator_id[3];
uint8_t reserved;
uint32_t exchange_addr;
union {
struct {
uint16_t reserved1;
uint16_t flags;
uint32_t residual;
uint16_t ox_id;
uint16_t scsi_status;
uint32_t relative_offset;
uint32_t reserved2;
uint32_t transfer_length;
uint32_t reserved3;
/* Data segment 0 address. */
uint32_t dseg_0_address[2];
/* Data segment 0 length. */
uint32_t dseg_0_length;
} status0;
struct {
uint16_t sense_length;
uint16_t flags;
uint32_t residual;
uint16_t ox_id;
uint16_t scsi_status;
uint16_t response_len;
uint16_t reserved;
uint8_t sense_data[24];
} status1;
} u;
} __packed;
/*
* ISP queue - CTIO type 7 from ISP 24xx to target driver
* returned entry structure.
*/
struct ctio7_from_24xx {
uint8_t entry_type; /* Entry type. */
uint8_t entry_count; /* Entry count. */
uint8_t sys_define; /* System defined. */
uint8_t entry_status; /* Entry Status. */
uint32_t handle; /* System defined handle */
uint16_t status;
uint16_t timeout;
uint16_t dseg_count; /* Data segment count. */
uint8_t vp_index;
uint8_t reserved1[5];
uint32_t exchange_address;
uint16_t reserved2;
uint16_t flags;
uint32_t residual;
uint16_t ox_id;
uint16_t reserved3;
uint32_t relative_offset;
uint8_t reserved4[24];
} __packed;
/* CTIO7 flags values */
#define CTIO7_FLAGS_SEND_STATUS BIT_15
#define CTIO7_FLAGS_TERMINATE BIT_14
#define CTIO7_FLAGS_CONFORM_REQ BIT_13
#define CTIO7_FLAGS_DONT_RET_CTIO BIT_8
#define CTIO7_FLAGS_STATUS_MODE_0 0
#define CTIO7_FLAGS_STATUS_MODE_1 BIT_6
#define CTIO7_FLAGS_EXPLICIT_CONFORM BIT_5
#define CTIO7_FLAGS_CONFIRM_SATISF BIT_4
#define CTIO7_FLAGS_DSD_PTR BIT_2
#define CTIO7_FLAGS_DATA_IN BIT_1
#define CTIO7_FLAGS_DATA_OUT BIT_0
#define ELS_PLOGI 0x3
#define ELS_FLOGI 0x4
#define ELS_LOGO 0x5
#define ELS_PRLI 0x20
#define ELS_PRLO 0x21
#define ELS_TPRLO 0x24
#define ELS_PDISC 0x50
#define ELS_ADISC 0x52
/*
* ISP queue - ABTS received/response entries structure definition for 24xx.
*/
#define ABTS_RECV_24XX 0x54 /* ABTS received (for 24xx) */
#define ABTS_RESP_24XX 0x55 /* ABTS responce (for 24xx) */
/*
* ISP queue - ABTS received IOCB entry structure definition for 24xx.
* The ABTS BLS received from the wire is sent to the
* target driver by the ISP 24xx.
* The IOCB is placed on the response queue.
*/
struct abts_recv_from_24xx {
uint8_t entry_type; /* Entry type. */
uint8_t entry_count; /* Entry count. */
uint8_t sys_define; /* System defined. */
uint8_t entry_status; /* Entry Status. */
uint8_t reserved_1[6];
uint16_t nport_handle;
uint8_t reserved_2[2];
uint8_t vp_index;
uint8_t reserved_3:4;
uint8_t sof_type:4;
uint32_t exchange_address;
struct fcp_hdr_le fcp_hdr_le;
uint8_t reserved_4[16];
uint32_t exchange_addr_to_abort;
} __packed;
#define ABTS_PARAM_ABORT_SEQ BIT_0
struct ba_acc_le {
uint16_t reserved;
uint8_t seq_id_last;
uint8_t seq_id_valid;
#define SEQ_ID_VALID 0x80
#define SEQ_ID_INVALID 0x00
uint16_t rx_id;
uint16_t ox_id;
uint16_t high_seq_cnt;
uint16_t low_seq_cnt;
} __packed;
struct ba_rjt_le {
uint8_t vendor_uniq;
uint8_t reason_expl;
uint8_t reason_code;
#define BA_RJT_REASON_CODE_INVALID_COMMAND 0x1
#define BA_RJT_REASON_CODE_UNABLE_TO_PERFORM 0x9
uint8_t reserved;
} __packed;
/*
* ISP queue - ABTS Response IOCB entry structure definition for 24xx.
* The ABTS response to the ABTS received is sent by the
* target driver to the ISP 24xx.
* The IOCB is placed on the request queue.
*/
struct abts_resp_to_24xx {
uint8_t entry_type; /* Entry type. */
uint8_t entry_count; /* Entry count. */
uint8_t sys_define; /* System defined. */
uint8_t entry_status; /* Entry Status. */
uint32_t handle;
uint16_t reserved_1;
uint16_t nport_handle;
uint16_t control_flags;
#define ABTS_CONTR_FLG_TERM_EXCHG BIT_0
uint8_t vp_index;
uint8_t reserved_3:4;
uint8_t sof_type:4;
uint32_t exchange_address;
struct fcp_hdr_le fcp_hdr_le;
union {
struct ba_acc_le ba_acct;
struct ba_rjt_le ba_rjt;
} __packed payload;
uint32_t reserved_4;
uint32_t exchange_addr_to_abort;
} __packed;
/*
* ISP queue - ABTS Response IOCB from ISP24xx Firmware entry structure.
* The ABTS response with completion status to the ABTS response
* (sent by the target driver to the ISP 24xx) is sent by the
* ISP24xx firmware to the target driver.
* The IOCB is placed on the response queue.
*/
struct abts_resp_from_24xx_fw {
uint8_t entry_type; /* Entry type. */
uint8_t entry_count; /* Entry count. */
uint8_t sys_define; /* System defined. */
uint8_t entry_status; /* Entry Status. */
uint32_t handle;
uint16_t compl_status;
#define ABTS_RESP_COMPL_SUCCESS 0
#define ABTS_RESP_COMPL_SUBCODE_ERROR 0x31
uint16_t nport_handle;
uint16_t reserved_1;
uint8_t reserved_2;
uint8_t reserved_3:4;
uint8_t sof_type:4;
uint32_t exchange_address;
struct fcp_hdr_le fcp_hdr_le;
uint8_t reserved_4[8];
uint32_t error_subcode1;
#define ABTS_RESP_SUBCODE_ERR_ABORTED_EXCH_NOT_TERM 0x1E
uint32_t error_subcode2;
uint32_t exchange_addr_to_abort;
} __packed;
/********************************************************************\
* Type Definitions used by initiator & target halves
\********************************************************************/
struct qla_tgt_mgmt_cmd;
struct qla_tgt_sess;
/*
* This structure provides a template of function calls that the
* target driver (from within qla_target.c) can issue to the
* target module (tcm_qla2xxx).
*/
struct qla_tgt_func_tmpl {
int (*handle_cmd)(struct scsi_qla_host *, struct qla_tgt_cmd *,
unsigned char *, uint32_t, int, int, int);
void (*handle_data)(struct qla_tgt_cmd *);
int (*handle_tmr)(struct qla_tgt_mgmt_cmd *, uint32_t, uint8_t,
uint32_t);
void (*free_cmd)(struct qla_tgt_cmd *);
void (*free_mcmd)(struct qla_tgt_mgmt_cmd *);
void (*free_session)(struct qla_tgt_sess *);
int (*check_initiator_node_acl)(struct scsi_qla_host *, unsigned char *,
void *, uint8_t *, uint16_t);
void (*update_sess)(struct qla_tgt_sess *, port_id_t, uint16_t, bool);
struct qla_tgt_sess *(*find_sess_by_loop_id)(struct scsi_qla_host *,
const uint16_t);
struct qla_tgt_sess *(*find_sess_by_s_id)(struct scsi_qla_host *,
const uint8_t *);
void (*clear_nacl_from_fcport_map)(struct qla_tgt_sess *);
void (*put_sess)(struct qla_tgt_sess *);
void (*shutdown_sess)(struct qla_tgt_sess *);
};
int qla2x00_wait_for_hba_online(struct scsi_qla_host *);
#include <target/target_core_base.h>
#define QLA_TGT_TIMEOUT 10 /* in seconds */
#define QLA_TGT_MAX_HW_PENDING_TIME 60 /* in seconds */
/* Immediate notify status constants */
#define IMM_NTFY_LIP_RESET 0x000E
#define IMM_NTFY_LIP_LINK_REINIT 0x000F
#define IMM_NTFY_IOCB_OVERFLOW 0x0016
#define IMM_NTFY_ABORT_TASK 0x0020
#define IMM_NTFY_PORT_LOGOUT 0x0029
#define IMM_NTFY_PORT_CONFIG 0x002A
#define IMM_NTFY_GLBL_TPRLO 0x002D
#define IMM_NTFY_GLBL_LOGO 0x002E
#define IMM_NTFY_RESOURCE 0x0034
#define IMM_NTFY_MSG_RX 0x0036
#define IMM_NTFY_SRR 0x0045
#define IMM_NTFY_ELS 0x0046
/* Immediate notify task flags */
#define IMM_NTFY_TASK_MGMT_SHIFT 8
#define QLA_TGT_CLEAR_ACA 0x40
#define QLA_TGT_TARGET_RESET 0x20
#define QLA_TGT_LUN_RESET 0x10
#define QLA_TGT_CLEAR_TS 0x04
#define QLA_TGT_ABORT_TS 0x02
#define QLA_TGT_ABORT_ALL_SESS 0xFFFF
#define QLA_TGT_ABORT_ALL 0xFFFE
#define QLA_TGT_NEXUS_LOSS_SESS 0xFFFD
#define QLA_TGT_NEXUS_LOSS 0xFFFC
/* Notify Acknowledge flags */
#define NOTIFY_ACK_RES_COUNT BIT_8
#define NOTIFY_ACK_CLEAR_LIP_RESET BIT_5
#define NOTIFY_ACK_TM_RESP_CODE_VALID BIT_4
/* Command's states */
#define QLA_TGT_STATE_NEW 0 /* New command + target processing */
#define QLA_TGT_STATE_NEED_DATA 1 /* target needs data to continue */
#define QLA_TGT_STATE_DATA_IN 2 /* Data arrived + target processing */
#define QLA_TGT_STATE_PROCESSED 3 /* target done processing */
#define QLA_TGT_STATE_ABORTED 4 /* Command aborted */
/* Special handles */
#define QLA_TGT_NULL_HANDLE 0
#define QLA_TGT_SKIP_HANDLE (0xFFFFFFFF & ~CTIO_COMPLETION_HANDLE_MARK)
/* ATIO task_codes field */
#define ATIO_SIMPLE_QUEUE 0
#define ATIO_HEAD_OF_QUEUE 1
#define ATIO_ORDERED_QUEUE 2
#define ATIO_ACA_QUEUE 4
#define ATIO_UNTAGGED 5
/* TM failed response codes, see FCP (9.4.11 FCP_RSP_INFO) */
#define FC_TM_SUCCESS 0
#define FC_TM_BAD_FCP_DATA 1
#define FC_TM_BAD_CMD 2
#define FC_TM_FCP_DATA_MISMATCH 3
#define FC_TM_REJECT 4
#define FC_TM_FAILED 5
/*
* Error code of qlt_pre_xmit_response() meaning that cmd's exchange was
* terminated, so no more actions is needed and success should be returned
* to target.
*/
#define QLA_TGT_PRE_XMIT_RESP_CMD_ABORTED 0x1717
#if (BITS_PER_LONG > 32) || defined(CONFIG_HIGHMEM64G)
#define pci_dma_lo32(a) (a & 0xffffffff)
#define pci_dma_hi32(a) ((((a) >> 16)>>16) & 0xffffffff)
#else
#define pci_dma_lo32(a) (a & 0xffffffff)
#define pci_dma_hi32(a) 0
#endif
#define QLA_TGT_SENSE_VALID(sense) ((sense != NULL) && \
(((const uint8_t *)(sense))[0] & 0x70) == 0x70)
struct qla_port_24xx_data {
uint8_t port_name[WWN_SIZE];
uint16_t loop_id;
uint16_t reserved;
};
struct qla_tgt {
struct scsi_qla_host *vha;
struct qla_hw_data *ha;
/*
* To sync between IRQ handlers and qlt_target_release(). Needed,
* because req_pkt() can drop/reaquire HW lock inside. Protected by
* HW lock.
*/
int irq_cmd_count;
int datasegs_per_cmd, datasegs_per_cont, sg_tablesize;
/* Target's flags, serialized by pha->hardware_lock */
unsigned int tgt_enable_64bit_addr:1; /* 64-bits PCI addr enabled */
unsigned int link_reinit_iocb_pending:1;
/*
* Protected by tgt_mutex AND hardware_lock for writing and tgt_mutex
* OR hardware_lock for reading.
*/
int tgt_stop; /* the target mode driver is being stopped */
int tgt_stopped; /* the target mode driver has been stopped */
/* Count of sessions refering qla_tgt. Protected by hardware_lock. */
int sess_count;
/* Protected by hardware_lock. Addition also protected by tgt_mutex. */
struct list_head sess_list;
/* Protected by hardware_lock */
struct list_head del_sess_list;
struct delayed_work sess_del_work;
spinlock_t sess_work_lock;
struct list_head sess_works_list;
struct work_struct sess_work;
struct imm_ntfy_from_isp link_reinit_iocb;
wait_queue_head_t waitQ;
int notify_ack_expected;
int abts_resp_expected;
int modify_lun_expected;
int ctio_srr_id;
int imm_srr_id;
spinlock_t srr_lock;
struct list_head srr_ctio_list;
struct list_head srr_imm_list;
struct work_struct srr_work;
atomic_t tgt_global_resets_count;
struct list_head tgt_list_entry;
};
/*
* Equivilant to IT Nexus (Initiator-Target)
*/
struct qla_tgt_sess {
uint16_t loop_id;
port_id_t s_id;
unsigned int conf_compl_supported:1;
unsigned int deleted:1;
unsigned int local:1;
struct se_session *se_sess;
struct scsi_qla_host *vha;
struct qla_tgt *tgt;
struct list_head sess_list_entry;
unsigned long expires;
struct list_head del_list_entry;
uint8_t port_name[WWN_SIZE];
struct work_struct free_work;
};
struct qla_tgt_cmd {
struct qla_tgt_sess *sess;
int state;
struct se_cmd se_cmd;
struct work_struct free_work;
struct work_struct work;
/* Sense buffer that will be mapped into outgoing status */
unsigned char sense_buffer[TRANSPORT_SENSE_BUFFER];
/* to save extra sess dereferences */
unsigned int conf_compl_supported:1;
unsigned int sg_mapped:1;
unsigned int free_sg:1;
unsigned int aborted:1; /* Needed in case of SRR */
unsigned int write_data_transferred:1;
struct scatterlist *sg; /* cmd data buffer SG vector */
int sg_cnt; /* SG segments count */
int bufflen; /* cmd buffer length */
int offset;
uint32_t tag;
uint32_t unpacked_lun;
enum dma_data_direction dma_data_direction;
uint16_t loop_id; /* to save extra sess dereferences */
struct qla_tgt *tgt; /* to save extra sess dereferences */
struct scsi_qla_host *vha;
struct list_head cmd_list;
struct atio_from_isp atio;
};
struct qla_tgt_sess_work_param {
struct list_head sess_works_list_entry;
#define QLA_TGT_SESS_WORK_ABORT 1
#define QLA_TGT_SESS_WORK_TM 2
int type;
union {
struct abts_recv_from_24xx abts;
struct imm_ntfy_from_isp tm_iocb;
struct atio_from_isp tm_iocb2;
};
};
struct qla_tgt_mgmt_cmd {
uint8_t tmr_func;
uint8_t fc_tm_rsp;
struct qla_tgt_sess *sess;
struct se_cmd se_cmd;
struct work_struct free_work;
unsigned int flags;
#define QLA24XX_MGMT_SEND_NACK 1
union {
struct atio_from_isp atio;
struct imm_ntfy_from_isp imm_ntfy;
struct abts_recv_from_24xx abts;
} __packed orig_iocb;
};
struct qla_tgt_prm {
struct qla_tgt_cmd *cmd;
struct qla_tgt *tgt;
void *pkt;
struct scatterlist *sg; /* cmd data buffer SG vector */
int seg_cnt;
int req_cnt;
uint16_t rq_result;
uint16_t scsi_status;
unsigned char *sense_buffer;
int sense_buffer_len;
int residual;
int add_status_pkt;
};
struct qla_tgt_srr_imm {
struct list_head srr_list_entry;
int srr_id;
struct imm_ntfy_from_isp imm_ntfy;
};
struct qla_tgt_srr_ctio {
struct list_head srr_list_entry;
int srr_id;
struct qla_tgt_cmd *cmd;
};
#define QLA_TGT_XMIT_DATA 1
#define QLA_TGT_XMIT_STATUS 2
#define QLA_TGT_XMIT_ALL (QLA_TGT_XMIT_STATUS|QLA_TGT_XMIT_DATA)
extern struct qla_tgt_data qla_target;
/*
* Internal function prototypes
*/
void qlt_disable_vha(struct scsi_qla_host *);
/*
* Function prototypes for qla_target.c logic used by qla2xxx LLD code.
*/
extern int qlt_add_target(struct qla_hw_data *, struct scsi_qla_host *);
extern int qlt_remove_target(struct qla_hw_data *, struct scsi_qla_host *);
extern int qlt_lport_register(struct qla_tgt_func_tmpl *, u64,
int (*callback)(struct scsi_qla_host *), void *);
extern void qlt_lport_deregister(struct scsi_qla_host *);
extern void qlt_unreg_sess(struct qla_tgt_sess *);
extern void qlt_fc_port_added(struct scsi_qla_host *, fc_port_t *);
extern void qlt_fc_port_deleted(struct scsi_qla_host *, fc_port_t *);
extern void qlt_set_mode(struct scsi_qla_host *ha);
extern void qlt_clear_mode(struct scsi_qla_host *ha);
extern int __init qlt_init(void);
extern void qlt_exit(void);
extern void qlt_update_vp_map(struct scsi_qla_host *, int);
/*
* This macro is used during early initializations when host->active_mode
* is not set. Right now, ha value is ignored.
*/
#define QLA_TGT_MODE_ENABLED() (ql2x_ini_mode != QLA2XXX_INI_MODE_ENABLED)
static inline bool qla_tgt_mode_enabled(struct scsi_qla_host *ha)
{
return ha->host->active_mode & MODE_TARGET;
}
static inline bool qla_ini_mode_enabled(struct scsi_qla_host *ha)
{
return ha->host->active_mode & MODE_INITIATOR;
}
static inline void qla_reverse_ini_mode(struct scsi_qla_host *ha)
{
if (ha->host->active_mode & MODE_INITIATOR)
ha->host->active_mode &= ~MODE_INITIATOR;
else
ha->host->active_mode |= MODE_INITIATOR;
}
/*
* Exported symbols from qla_target.c LLD logic used by qla2xxx code..
*/
extern void qlt_24xx_atio_pkt_all_vps(struct scsi_qla_host *,
struct atio_from_isp *);
extern void qlt_response_pkt_all_vps(struct scsi_qla_host *, response_t *);
extern int qlt_rdy_to_xfer(struct qla_tgt_cmd *);
extern int qlt_xmit_response(struct qla_tgt_cmd *, int, uint8_t);
extern void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *);
extern void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *);
extern void qlt_free_cmd(struct qla_tgt_cmd *cmd);
extern void qlt_ctio_completion(struct scsi_qla_host *, uint32_t);
extern void qlt_async_event(uint16_t, struct scsi_qla_host *, uint16_t *);
extern void qlt_enable_vha(struct scsi_qla_host *);
extern void qlt_vport_create(struct scsi_qla_host *, struct qla_hw_data *);
extern void qlt_rff_id(struct scsi_qla_host *, struct ct_sns_req *);
extern void qlt_init_atio_q_entries(struct scsi_qla_host *);
extern void qlt_24xx_process_atio_queue(struct scsi_qla_host *);
extern void qlt_24xx_config_rings(struct scsi_qla_host *,
device_reg_t __iomem *);
extern void qlt_24xx_config_nvram_stage1(struct scsi_qla_host *,
struct nvram_24xx *);
extern void qlt_24xx_config_nvram_stage2(struct scsi_qla_host *,
struct init_cb_24xx *);
extern int qlt_24xx_process_response_error(struct scsi_qla_host *,
struct sts_entry_24xx *);
extern void qlt_modify_vp_config(struct scsi_qla_host *,
struct vp_config_entry_24xx *);
extern void qlt_probe_one_stage1(struct scsi_qla_host *, struct qla_hw_data *);
extern int qlt_mem_alloc(struct qla_hw_data *);
extern void qlt_mem_free(struct qla_hw_data *);
extern void qlt_stop_phase1(struct qla_tgt *);
extern void qlt_stop_phase2(struct qla_tgt *);
#endif /* __QLA_TARGET_H */
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